Question: "Who is {born in} of {George Santayana} where the {partner city} is in {San Juan}?"
Paraphrase: "Who is born in { George Santayana } in { San Juan } where the { partner city } is?"
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q237833 wdt:P19 ?answer . ?answer wdt:P190 wd:Q41211}
Answer: Madrid